package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    AddressBookMapper addressBookMapper;
    @Autowired
    ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private WebSocketServer webSocketServer;
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

        //判断是否存在业务异常
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null){
            throw new RuntimeException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        Long currentId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(currentId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0){
            throw new RuntimeException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表中插入数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setUserId(currentId);//用户id
        orders.setOrderTime(LocalDateTime.now());
        orders.setNumber(String.valueOf(System.currentTimeMillis()));//订单号
        orders.setAddress(addressBook.getDetail());
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        log.info("订单信息:{}",orders);
        orderMapper.insert(orders);
        log.info("订单添加成功");
        //向订单明细表中插入数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.saveBatch(orderDetailList);
        //清空购物车
        shoppingCartMapper.deleteByUserId(currentId);
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
        return orderSubmitVO;
    }


    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改
        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单

        //发现没有将支付时间 check_out属性赋值，所以在这里更新
        LocalDateTime check_out_time = LocalDateTime.now();

        //获取订单号码
        String orderNumber = ordersPaymentDTO.getOrderNumber();
        Orders ordersDB = orderMapper.getByNumber(orderNumber);
        log.info("调用updateStatus，用于替换微信支付更新数据库状态的问题");
        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderNumber);

        Map map = new HashMap();
        map.put("type", 1);// 消息类型，1表示来单提醒
        //获取订单id
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号：" + orderNumber);

        // 通过WebSocket实现来单提醒，向客户端浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
        log.info("来单提醒：{}", JSON.toJSONString(map));


        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

    }

    @Override
    public PageResult pageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> orderVOList = new ArrayList<>();
        if (page != null && page.getTotal() != 0){
            for (Orders orders : page) {
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                orderVO.setOrderDetailList(orderDetailList);
                orderVOList.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),orderVOList);
    }

    @Override
    public OrderVO getById(Long id) {

        Long currentId = BaseContext.getCurrentId();
        Orders order = orderMapper.getOrder(id, currentId);
        Long orderId = order.getId();
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
//        Orders order = orderMapper.getByOrderId(id);
//        Long orderId = order.getId();
//        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);
//        OrderVO orderVO = new OrderVO();
//        BeanUtils.copyProperties(order,orderVO);
//        orderVO.setOrderDetailList(orderDetailList);
//        return orderVO;
    }

    @Override
    /**
     * 用户取消订单
     *
     * @param id
     */
    public void userCancelById(Long id){
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void repetition(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders == null){
            throw new OrderBusinessException("订单不存在");
        }
        Long ordersId = orders.getId();
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(ordersId);
//        ShoppingCart shoppingCart = new ShoppingCart();
//        for (OrderDetail orderDetail : orderDetailList){
//            Long dishId = orderDetail.getDishId();
//            if (dishId != null){
//                Dish dish = dishMapper.getById(dishId);
//                shoppingCart.setUserId(BaseContext.getCurrentId());
//                shoppingCart.setDishId(dishId);
//                shoppingCart.setName(dish.getName());
//                shoppingCart.setImage(dish.getImage());
//                shoppingCart.setAmount(dish.getPrice());
//                shoppingCart.setNumber(orderDetail.getNumber());
//            }else {
//                Long setmealId = orderDetail.getSetmealId();
//                Setmeal setmeal = setmealMapper.getById(setmealId);
//                shoppingCart.setUserId(BaseContext.getCurrentId());
//                shoppingCart.setSetmealId(setmealId);
//                shoppingCart.setName(setmeal.getName());
//                shoppingCart.setImage(setmeal.getImage());
//                shoppingCart.setAmount(setmeal.getPrice());
//                shoppingCart.setNumber(orderDetail.getNumber());
//            }
//            shoppingCart.setCreateTime(LocalDateTime.now());
//            shoppingCartMapper.save(shoppingCart);
//        }
        List<ShoppingCart> shoppingCartList = new ArrayList<>();
        for (OrderDetail orderDetail : orderDetailList){
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail,shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartList.add(shoppingCart);
        }
        shoppingCartMapper.saveBatch(shoppingCartList);
    }

    @Override
    public PageResult adminPageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        long total = page.getTotal();
        List<Orders> records = page.getResult();
        PageResult pageResult = new PageResult(total, records);
        return pageResult;
    }


    @Override
    public OrderStatisticsVO statistics() {
        OrderStatisticsVO orderStatisticsVO = orderMapper.statistics();
        return orderStatisticsVO;
    }

    @Override
    public OrderVO getByOrderId(Long id) {

        Orders order = orderMapper.getByOrderId(id);
        Long orderId = order.getId();
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = new Orders();
        ordersConfirmDTO.setStatus(Orders.CONFIRMED);
        BeanUtils.copyProperties(ordersConfirmDTO,orders);
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        Orders orders = new Orders();
        orders.setId(ordersRejectionDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void adminCancelById(OrdersCancelDTO ordersCancelDTO) {
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void delivery(Long id) {
        Orders orders = orderMapper.getById(id);
        if(orders.getStatus() != Orders.CONFIRMED){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    @Override
    public void complete(Long id) {
        Orders orders = orderMapper.getById(id);
        if(orders.getStatus() != Orders.DELIVERY_IN_PROGRESS){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        if(orders == null){
            throw new RuntimeException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号："+orders.getNumber());
        String jsonString = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);
    }


}
